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Edwin Haslam
Edwin Haslam (1932 – 3 October 2013) was an organic chemist and an author of books on s. He was an alumnus of Sir John Deane's College in Northwich, Cheshire, United Kingdom and was for many years Professor of Organic Chemistry at the . Haslam proposed a first comprehensive definition of plant polyphenols based on the earlier proposals of [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyphenol
Polyphenols () are a large family of naturally occurring organic compounds characterized by multiples of phenol units. They are abundant in plants and structurally diverse. Polyphenols include flavonoids, tannic acid, and ellagitannin, some of which have been used historically as dyes and for tanning garments. Etymology The name derives from the Ancient Greek word (''polus'', meaning "many, much") and the word phenol which refers to a chemical structure formed by attaching to an aromatic benzenoid (phenyl) ring to a hydroxyl (-OH) group as is found in alcohols (hence the ''-ol'' suffix). The term polyphenol has been in use at least since 1894. Definition The term polyphenol is not well-defined, but is generally agreed that they are natural products "having a polyphenol structure (i.e., several hydroxyl groups on aromatic rings)" including four principal classes: "phenolic acids, flavonoids, stilbenes, and lignans". *Flavonoids include flavones, flavonols, flavanols, f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sir John Deane's College
Sir John Deane's Sixth Form College is a sixth form college in Northwich, Cheshire, UK. It was formerly Sir John Deane's Grammar School, which was founded in 1557. History Sir John Deane (in the 16th century, the title indicated a presbyter with a university degree, rather than a knight; in today's language, he would be the Rev'd John Deane, MA) was born in Shurlach, between Davenham and the Rudheath district of Northwich, but rose to become Rector of Great St Bartholomew in Smithfield, London,In 1893, Old Wittonians placed a brass in Sir John's memory in his former parish church. See and Prebendary of Lincoln. He worked under both Protestant and Roman Catholic régimes during the English Reformation. He established a grammar school for poor boys in Witton on Michaelmas 1557, "in the name of Jesus". It was to be maintained by feoffees (a kind of charity), who were given land in Chester and the Wirral, The bold text in the quotation represents small capitals in the origina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Sheffield
, mottoeng = To discover the causes of things , established = – University of SheffieldPredecessor institutions: – Sheffield Medical School – Firth College – Sheffield Technical School – University College of Sheffield , type = Public research university , academic_staff = 5,670 (2020) - including academic atypical staff , administrative_staff = , chancellor = Lady Justice Rafferty , vice_chancellor = Koen Lamberts , students = () , undergrad = () , postgrad = () , endowment = £46.7 million (2021) , budget = £741.0 million (2020–21) , city = Sheffield , state = South Yorkshire , country = England , coor = , campus = Urban , colours = Black & gold , affiliations = Russell Group WUN ACUN8 Group White Rose Sutton 30EQUISAMBAUniversities UK , website = , logo = The University of Sheffield (informally Sheffield University or TUOS) is a public research university in Sheffield, South Yorkshire, England. Its history traces back to the f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edgar Charles Bate-Smith
Edgar Charles Bate-Smith (1900-1989Practical Polyphenolics, Edwin Haslam, 1998, ) was an English chemist and phytochemist specialising in food chemistry. He worked in the Low Temperature Research Station in Cambridge where his main fields of research were meat and polyphenols. The discovery in 1943 by Martin and Synge of paper chromatography provided for the first time the means of surveying the phenolic constituents of plants and for their separation and identification. There was an explosion of activity in this field after 1945, none more so than that of Bate-Smith and Tony Swain (chemist), Tony Swain. In 1951, Bate-Smith developed and first described a coloration method to detect the presence of condensed tannins (also called proanthocyanidins) in plant materials. This reaction is based on heating in acidic conditions and gives rise to anthocyanidin pigments. Bate-smith recommended the use of the Forestal solvent for the isolation of leuco-anthocyanins in 1954. In 1973, he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tony Swain (chemist)
Tony Swain (1922–1987) was a chemist known for his definition of a plant polyphenol with Bate-Smith, Haslam and White, which includes specific structural characteristics common to all phenolics having a tanning property. It is referred to as the White–Bate-Smith–Swain–Haslam (WBSSH) definition. The discovery in 1943 by Martin and Synge of paper chromatography provided for the first time the means of surveying the phenolic constituents of plants and for their separation and identification. There was an explosion of activity in this field after 1945, none more so than that of Bate-Smith and Tony Swain. He worked with Edgar C. Bate-Smith at Cambridge University. Tony Swain was one of the first editors of '' Phytochemistry'' with Jeffrey Harborne.Phytochemistry and pharmacognosy. J. David Phillipson, Phytochemistry, November–December 2007, Volume 68, Issues 22–24, pages 2960–2972, He started the sister journal ''Biochemical Systematics'' in 1973, renamed '' Biochemic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theodore White (chemist)
Theodore Harold White (, May 6, 1915 – May 15, 1986) was an American political journalist and historian, known for his reporting from China during World War II and the ''Making of the President'' series. White started his career reporting for ''Time'' magazine from wartime China in the 1940s. He was the first foreigner to report on the Chinese famine of 1942–43 and helped to catch international attention to the shortcomings of the Nationalist government. After leaving ''Time'', he reported on post-war Europe for popular magazines in the early 1950s, but lost these assignments because of his association with the "Loss of China". He regained national recognition with ''The Making of the President 1960'', whose combination of interviews, on the ground reporting, and vivid writing were developed in best-selling accounts of the 1964, 1968, 1972, and 1980 presidential elections, and became a model for later journalists. Early life White was born May 6, 1915, in Dorchester, Bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natural Phenol
In biochemistry, naturally occurring phenols are natural products containing at least one phenol functional group. Phenolic compounds are produced by plants and microorganisms. Organisms sometimes synthesize phenolic compounds in response to ecological pressures such as pathogen and insect attack, UV radiation and wounding. As they are present in food consumed in human diets and in plants used in traditional medicine of several cultures, their role in human health and disease is a subject of research. Some phenols are germicidal and are used in formulating disinfectants. Classification Various classification schemes can be applied. A commonly used scheme is based on the number of carbons and was devised by Jeffrey Harborne and Simmonds in 1964 and published in 1980: C6-C7-C6 Diarylheptanoids are not included in this Harborne classification. They can also be classified on the basis of their number of phenol groups. They can therefore be called ''simple phenols'' or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1932 Births
Year 193 ( CXCIII) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Sosius and Ericius (or, less frequently, year 946 ''Ab urbe condita''). The denomination 193 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire * January 1 – Year of the Five Emperors: The Roman Senate chooses Publius Helvius Pertinax, against his will, to succeed the late Commodus as Emperor. Pertinax is forced to reorganize the handling of finances, which were wrecked under Commodus, to reestablish discipline in the Roman army, and to suspend the food programs established by Trajan, provoking the ire of the Praetorian Guard. * March 28 – Pertinax is assassinated by members of the Praetorian Guard, who storm the imperial palace. The Empire is auctioned off ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2013 Deaths
This is a list of deaths of notable people, organised by year. New deaths articles are added to their respective month (e.g., Deaths in ) and then linked here. 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 See also * Lists of deaths by day The following pages, corresponding to the Gregorian calendar, list the historical events, births, deaths, and holidays and observances of the specified day of the year: Footnotes See also * Leap year * List of calendars * List of non-standard ... * Deaths by year {{DEFAULTSORT:deaths by year ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Organic Chemists
Organic may refer to: * Organic, of or relating to an organism, a living entity * Organic, of or relating to an anatomical organ Chemistry * Organic matter, matter that has come from a once-living organism, is capable of decay or is the product of decay, or is composed of organic compounds * Organic compound, a compound that contains carbon ** Organic chemistry, chemistry involving organic compounds Farming, certification and products * Organic farming, agriculture conducted according to certain standards, especially the use of stated methods of fertilization and pest control * Organic certification, accreditation process for producers of organically-farmed products * Organic horticulture, the science and art of growing fruits, vegetables, flowers, or ornamental plants by following the essential principles of organic agriculture * Organic products, "organics": ** Organic food, food produced from organic farming methods and often certified organic according to organic farming sta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Academics Of The University Of Sheffield
An academy (Attic Greek: Ἀκαδήμεια; Koine Greek Ἀκαδημία) is an institution of secondary or tertiary higher learning (and generally also research or honorary membership). The name traces back to Plato's school of philosophy, founded approximately 385 BC at Akademia, a sanctuary of Athena, the goddess of wisdom and skill, north of Athens, Greece. Etymology The word comes from the ''Academy'' in ancient Greece, which derives from the Athenian hero, ''Akademos''. Outside the city walls of Athens, the gymnasium was made famous by Plato as a center of learning. The sacred space, dedicated to the goddess of wisdom, Athena, had formerly been an olive grove, hence the expression "the groves of Academe". In these gardens, the philosopher Plato conversed with followers. Plato developed his sessions into a method of teaching philosophy and in 387 BC, established what is known today as the Old Academy. By extension, ''academia'' has come to mean the accumulation, de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Science Writers
British may refer to: Peoples, culture, and language * British people, nationals or natives of the United Kingdom, British Overseas Territories, and Crown Dependencies. ** Britishness, the British identity and common culture * British English, the English language as spoken and written in the United Kingdom or, more broadly, throughout the British Isles * Celtic Britons, an ancient ethno-linguistic group * Brittonic languages, a branch of the Insular Celtic language family (formerly called British) ** Common Brittonic, an ancient language Other uses *''Brit(ish)'', a 2018 memoir by Afua Hirsch *People or things associated with: ** Great Britain, an island ** United Kingdom, a sovereign state ** Kingdom of Great Britain (1707–1800) ** United Kingdom of Great Britain and Ireland (1801–1922) See also * Terminology of the British Isles * Alternative names for the British * English (other) * Britannic (other) * British Isles * Brit (other) * Briton (d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
